History 2,773 Politics and government 383 Social conditions 199 Foreign relations 153 Women 137 Colonies 126 Economic conditions 112 Social aspects 111 Labor and laboring classes 78 History and criticism 73 Sources 66 Social life and customs 61 Economic policy 58 World War, 1939-1945 57 Government policy 53 Socialism 53 Trade-unions 53 Industries 49 Education 45 Political activity 45 Political parties 45 Industrial relations 41 Political aspects 41 Social policy 41 English literature 40 Feminism 39 Public opinion 39 Emigration and immigration 38 Commerce 37 Race relations 37